Since messengers who carried word between the two San Francisco 49ers football team shirt fighting sides went around unarmed, the rules of battle meant that they were not to be attacked, and were recognized as non combatants. Once armies started providing medical personnel to care for their wounded, they needed a symbol that showed that the medical people were not combatants.
and were supposed to be immune from enemy attack. San Francisco 49ers football team shirt (this was long before the International Red Cross was established) The Caduceus was already a symbol for non combatants, so newly established medical corps adopted the Caduceus as their badge.
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